12" Polished Aluminum Flat Oval Air Cleaner Base
12" Polished Aluminum Flat Oval Air Cleaner Base
SKU: SKU: SP8404B
Low stock
Product Details
Features
- Polished aluminum flat base for a clean engine-bay finish
- Base only — pairs with a compatible top and filter for a full assembly
- Fits 12" x 8 3/8" oval, 5 1/8" carburetor neck
- Filter sits raised 3/4" for carburetor and clearance management
Description
This polished aluminum flat base is built for universal carbureted air-cleaner applications, positioning the filter assembly with a 5 1/8" neck flange and flat base layout. It's built as a base-only component, so it requires a separately purchased compatible top and filter element to form a complete air-cleaner assembly.
The flat base design places the filter raised 3/4" above the base, which helps manage carburetor clearance, overall air-cleaner height, and installation layout. Aluminum construction with a polished finish supports stable mounting and a clean engine-bay appearance.
Before ordering, verify carburetor neck diameter, filter height, top fitment, and hood clearance, and confirm throttle linkage clearance, breather routing, fuel-line clearance, and stud length for final assembly.
Applications
Fits 12" x 8 3/8" oval air-cleaner assemblies with a 5 1/8" carburetor neck; used in street performance applications and restoration projects.
Sizing
12" x 8 3/8" oval, 5 1/8" neck flange, flat base style with filter raised 3/4". Base only — requires a separately purchased compatible top and filter element.
Specs
| Air Cleaner Size | 12" X 8 3/8" |
| Air Cleaner Shape | Oval |
| Base Style | Flat |
| Base Material | Aluminum |
| Base Finish | Polished |
| Filter Placement | Raised 3/4" |
| Neck Flange | 5 1/8" |
Engine Fitment
COMPATIBLE WITH
Universal — fits 12" x 8⅜" oval air-cleaner assemblies with a 5⅛" carburetor neck. Base only — requires a separately purchased compatible top and filter element to form a complete assembly.
NOTES
• Raises filter ¾" — factor this into overall assembled height and hood clearance calculations.
• Verify carburetor neck diameter, filter height, top fitment, and hood clearance before installation.
• Confirm throttle linkage clearance, breather routing, fuel-line clearance, and stud length before final assembly.
COMMON VEHICLE APPLICATIONS
Street performance and restoration builds assembling a custom air-cleaner combination
Replacing a damaged or mismatched base on an existing 12" oval air-cleaner assembly
Q&A
Does this include the top and filter, or just the base?
This listing is for the air cleaner base only. A compatible top and filter element must be purchased separately to complete the air cleaner assembly.
What does "filter raised 3/4"" mean?
The flat base positions the filter element ¾ inch above the base, affecting the overall assembled height and available hood clearance. Be sure to account for this when measuring your installation.
Will this fit any 12" oval air-cleaner top?
Not necessarily. Verify the top size, center stud, and sealing surface are compatible with your existing 12-inch oval air cleaner top before ordering.
What carburetor neck size does this base fit?
This air cleaner base is designed for carburetors with a 5⅛-inch neck (air horn) diameter.
Why would I buy just the base instead of a full kit?
A base-only listing is ideal for replacing a damaged or mismatched base or for building a custom air cleaner assembly using your preferred base, filter element, and top.
Emissions Notice
This product does not affect vehicle emissions and is not subject to emissions compliance regulations.
12" Polished Aluminum Flat Oval Air Cleaner Base
This polished aluminum flat base is built for universal carbureted air-cleaner applications, positioning the filter assembly with a 5 1/8" neck flange and flat base layout. It's built as a base-only component, so it requires a separately purchased compatible top and filter element to form a complete air-cleaner assembly.
The flat base design places the filter raised 3/4" above the base, which helps manage carburetor clearance, overall air-cleaner height, and installation layout. Aluminum construction with a polished finish supports stable mounting and a clean engine-bay appearance.
Before ordering, verify carburetor neck diameter, filter height, top fitment, and hood clearance, and confirm throttle linkage clearance, breather routing, fuel-line clearance, and stud length for final assembly.
Applications
Fits 12" x 8 3/8" oval air-cleaner assemblies with a 5 1/8" carburetor neck; used in street performance applications and restoration projects.
Sizing
12" x 8 3/8" oval, 5 1/8" neck flange, flat base style with filter raised 3/4". Base only — requires a separately purchased compatible top and filter element.
COMPATIBLE WITH
Universal — fits 12" x 8⅜" oval air-cleaner assemblies with a 5⅛" carburetor neck. Base only — requires a separately purchased compatible top and filter element to form a complete assembly.
NOTES
• Raises filter ¾" — factor this into overall assembled height and hood clearance calculations.
• Verify carburetor neck diameter, filter height, top fitment, and hood clearance before installation.
• Confirm throttle linkage clearance, breather routing, fuel-line clearance, and stud length before final assembly.
COMMON VEHICLE APPLICATIONS
Street performance and restoration builds assembling a custom air-cleaner combination
Replacing a damaged or mismatched base on an existing 12" oval air-cleaner assembly
SPECIFICATIONS
Air Cleaner Size: 12" X 8 3/8"
Air Cleaner Shape: Oval
Base Style: Flat
Base Material: Aluminum
Base Finish: Polished
Filter Placement: Raised 3/4"
Neck Flange: 5 1/8"
